Diffusion Bonding between AZ91 Magnesium Alloy and 7075 Aluminum Alloy

2011 ◽  
Vol 308-310 ◽  
pp. 800-803 ◽  
Author(s):  
Fei Lin ◽  
Tie Peng Li ◽  
Qian Yu ◽  
Lu Lu Sun ◽  
Qing Sen Meng
Keyword(s):  
Shear Strength ◽  
Aluminum Alloy ◽  
Magnesium Alloy ◽  
Holding Time ◽  
7075 Aluminum Alloy ◽  
Az91 Magnesium Alloy ◽  
Joint Shear Strength ◽  
Welding Temperature ◽  
Az91 Magnesium ◽  
Joint Shear

In the present investigation, AZ91 magnesium alloy was vacuum diffusion bonded to a 7075 aluminum alloy. The effects of the welding temperature and holding time on the joint shear strength are investigated with the help of electron microscopy, micro-hardness and electronic universal testing machine. It is shown that in certain extent, the welding temperature and holding time have great effect on the joint shear strength. The maximum of joint shear strength is obtained and the width of diffusion layer is 34.36μm with the bonding temperature being 470°C and the holding time reaching 60min.

Diffusion Bonding between AZ31 Magnesium Alloy and 7075 Aluminum Alloy

2014 ◽  
Vol 618 ◽  
pp. 150-153 ◽  
Author(s):  
Zhi Tong Chen ◽  
Fei Lin ◽  
Jie Li ◽  
Fei Wang ◽  
Qing Sen Meng
Keyword(s):  
Shear Strength ◽  
Aluminum Alloy ◽  
Magnesium Alloy ◽  
Diffusion Bonding ◽  
Holding Time ◽  
Az31 Magnesium Alloy ◽  
Diffusion Welding ◽  
7075 Aluminum Alloy ◽  
Micro Hardness ◽  
Welding Temperature

A study on vacuum diffusion bonding between as-extruded AZ31 magnesium alloy and 7075 aluminum alloy was carried out according to atomic diffusion theory. Recrystallization annealing was used for grain refinement of AZ31 magnesium alloy and 7075 aluminum alloy before the diffusion welding. The quality of the bonding joints was checked by shear test, micro-hardness test and microstructure analysis. Experimental results showed that the welding temperature and holding time have a great effect on the joint shear strength. The maximum of shear strength was 38.41MPa under the temperature of 470°C and the holding time of 60min. The result of micro-hardness measurement showed that the micro-hardness of welded joints was maximum. Three kinds of intermetallic compounds, Mg2A13, MgAl and Mgl7Al12, formed at the interfacial transition zone at 470°C.

Microstructure and Properties of AZ31B Magnesium-LY12 Aluminum Alloys Diffusion-Bonded Joint

2014 ◽  
Vol 937 ◽  
pp. 172-177
Author(s):  
Shuang Ming Du ◽  
Qian Qin
Keyword(s):  
Solid Solution ◽  
Aluminum Alloy ◽  
Magnesium Alloy ◽  
Heating Temperature ◽  
Welding Process ◽  
Holding Time ◽  
Welding Temperature ◽  
Interface Zone ◽  
Shearing Strength ◽  
Welding Pressure

In this paper, AZ31B magnesium alloy/LY12 aluminum alloy were bonded together with copper foil as interlayer by vaeuum diffusion bonding technology at different temperature for holding time 60 min and pressure 2.5MPa. Analysis the microstructure of the joint under the condition of 450°C,and the effects of heating temperature on the shear thrength , microhardness and the width of the interface zone were studied. The results showed that under the condition of 450°C in holding time 60 min and pressure 2.5MPa, the microstructure at interface zone of diffusion brazing joint includes α-Mg solid solution, Mg2Cu, Cu2Mg, γ-Cu solid solution, CuAl, CuAl2 and β-Al solid solution. The width of the interface increases with brazing temperature increasing, and the microhardness gradient of interface zone in the side of aluminum alloy is much higher than that in magnesium alloy side. As the welding temperature increases, the shear strength shows an increasing trend at first and then decreases. When the welding process is 460°C keeping for 60 min, welding pressure is 2.5Mpa, the highest shearing strength of the joint can reach 35 MPa.

Effects of the drill flute number on drilling of a casted AZ91 magnesium alloy

2019 ◽  
Vol 61 (3) ◽  
pp. 260-266 ◽  
Author(s):  
Ugur Koklu ◽  
Sezer Morkavuk ◽  
Levent Urtekin
Keyword(s):  
Magnesium Alloy ◽  
Az91 Magnesium Alloy ◽  
Az91 Magnesium

Interfacial reaction in squeeze cast SICW/AZ91 magnesium alloy composite

1996 ◽  
Vol 35 (4) ◽  
pp. 529-534 ◽  
Author(s):  
Kun Wu ◽  
Mingyi Zheng ◽  
Min Zhao ◽  
Congkai Yao ◽  
Jihong Li
Keyword(s):  
Magnesium Alloy ◽  
Interfacial Reaction ◽  
Alloy Composite ◽  
Az91 Magnesium Alloy ◽  
Squeeze Cast ◽  
Az91 Magnesium

scholarly journals Investigation of the Influence of Open-Die Forging Parameters on the Flow Kinetics of AZ91 Magnesium Alloy

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4010
Author(s):  
Grzegorz Banaszek ◽  
Teresa Bajor ◽  
Anna Kawałek ◽  
Tomasz Garstka
Keyword(s):  
Magnesium Alloy ◽  
Operation Time ◽  
Strength Properties ◽  
Hydraulic Press ◽  
Az91 Alloy ◽  
Az91 Magnesium Alloy ◽  
Numerical Tests ◽  
Az91 Magnesium ◽  
Product Manufacturing ◽  
Open Die Forging

This paper presents the results of numerical tests of the process of forging magnesium alloy ingots (AZ91) on a hydraulic press with the use of flat and proprietary shaped anvils. The analysis of the hydrostatic pressure distribution and the deformation intensity was carried out. It is one of the elements used for determining the assumptions for the technology of forging to obtain a semi-finished product from the AZ91 alloy with good strength properties. The aim of the research was to reduce the number of forging passes, which will shorten the operation time and reduce the product manufacturing costs. Numerical tests of the AZ91 magnesium alloy were carried out using commercial Forge®NxT software.

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